HomeMy WebLinkAboutOrd 1983-2039 ORDINANCE NO. 2039
ORDINANCE AMENDING SECTIONS 18.54.020, 18.54.030,
18.54.050, 18.54.060, AND 18.54.070 OF CHAPTER 18.54 OF THE
CHULA VISTA MUNICIPAL CODE ENTITLED FLOOD PLAIN REGULATIONS
RELATING TO REQUIREMENTS CONTROLLING DEVELOPMENT OF
PROPERTY WITHIN IDENTIFIED FLOOD PLAINS IN ACCORDANCE WITH
FEDERAL RULES AND REGULATIONS
Section I: That Sections 18.54.020, 18.54.030, 18.54.050, 18.54.060
and 18.54.070 of Chapter 18.54 of the Chula Vista Municipal Code be, and the
same is hereby amended to read as follows:
18.54.020 Official maps.
The city council designates flood insurance rate maps (FIRM) and Flood
Boundary and Floodway Map, community panel numbers 065021 0001-0007 dated
August 15, 1983, and amendments on file in the office of the director of
public works, as the official maps to be used in determining those areas of
special flood hazard.
18.54.030 Definitions.
Unless specifically defined in this section, words or phrases used in this
chapter shall be interpreted so as to give them the same meaning as they have
in common usage so as to give this chapter its most reasonable application.
A. "Areas of flood hazard" means areas within the community subject to a one
percent or greater chance of flooding in any given year. These areas are
identified as zones A, A1-30 and AO on the official maps.
B. "Development" means any manmade change to improved or unimproved real
estate, including but not limited to buildings or other structures,
mining, dredging, filling, grading, paving, excavation or drilling
operations.
C. "Flood" means a temporary rise in a stream's flow or stage that results in
water overflowing its banks and inundating areas adjacent to the channel,
or an unusual and rapid accumulation of runoff or surface waters from any
Source,
D. "Floodproofing" means any combination of structural and nonstructural
additions, changes, or adjustments to structures which reduce or eliminate
flood damage to real estate or improved real property, water and sanitary
facilities, structures and their contents.
E. "Habitable floor" means a floor used for living which includes working,
sleeping, eating, cooking or recreation or any combination thereof. A
floor used only for storage purposes is not a habitable floor.
F. "Mobile home" means a structure, transportable in one or more sections,
which is built on a permanent chassis and designed to be used with or
without a permanent foundation when connected to the required utilities.
It does not include recreational vehicles or travel trailers.
G. "Mobile home park (subdivision)" means a parcel (or contiguous parcels) of
land which has been divided into two or more lots for rent or sale and the
placement of mobile homes.
H. "One-hundred-year flood" means the condition of flooding having a one
percent chance of annual occurrence.
I. "Regulatory flood elevation" means the water surface elevation of the
one-hundred-year flood.
J. "Regulatory floodway" means the channel of a river or other watercourse
and the adjacent land areas that must be reserved in order to discharge
the base flood without cumulatively increasing the water surface elevation
more than one foot. The designated regulatory floodways are the channels
of the Sweetwater River and Telegraph Canyon Creek shown on the current
Flood Boundary and Floodway Map, and Poggi Canyon Creek as shown on the
County of San Diego Floodway Map.
K. "Structure" means a walled and roofed structure, including a gas or liquid
storage tank that is principally above the ground, including but without
limitation to buildings, factories, sheds, cabins, mobile homes and other
similar uses.
L. "Substantial improvement" means any repair, reconstruction or improvement
of a structure, the cost of which equals or exceeds fifty percent of the
market value of the structure either: (1) before the improvement is
started, or (2) if the structure has been damaged and is being restored,
before the damage occurred. For the purposes of this definition
"substantial improvement" is considered to occur when the first alteration
of any wall, ceiling, floor or other structural part of the building
commences, whether or not that alteration affects the external dimensions
of the structure. The term does not, however, include any alteration to
comply with existing state or local health, sanitary, building or safety
codes or regulations, or structures listed in national or state registers
of historic places.
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18.54.050 Floodplain development -- Review by city engineer.
The city engineer shall review all development permit applications to
determine if the site of the proposed development is reasonably safe from
flooding, that all applicable requirements of the National Flood Insurance
Program have been met, and that all necessary permits have been received as
required by federal or state law. Copies of such permits shall be a required
part of permit applications.
18.54.060 Floodplain development -- Review by director of building and
housing.
The director of building and housing, in reviewing all applications for
new construction, substantial improvements, prefabricated buildings, placement
of mobilehomes and other developments (as defined in this chapter) will
obtain, review and reasonably utilize, if available, any regulatory flood
elevation data from federal, state or other sources until such other data is
provided by the Federal Insurance Administration in a flood insurance study;
and require within areas designated as zone A, zone A1-30 and zone AO on the
official map that the following performance standards be met:
A. Residential structures and substantial improvements of residential
structures shall meet the following standards: the first floor elevation
(to include basement) of new residential structures shall be elevated to a
minimum of one foot above the regulatory flood elevation; except that in
zone AO the lowest floor (including basement) shall be above the crown of
the nearest street to or above the regulatory depth number.
B. Nonresidential structures shall meet the following standards:
1. The first floor elevation (to include basement) of nonresidential
structures be elevated or floodproofed to a minimum of one foot above
the regulatory flood elevation; except that in zone AO the lowest
floor (including basement) shall be above the crown of the nearest
street to or above the regulatory depth number or together with
attendant utility and sanitary facilities be completely flood proofed
to or above that level so that any space below that level is
watertight with walls substantially impermeable to the passage of
water and with structural components having the capability of
resisting hydrostatic and hydrodynamic loads and effects of buoyancy;
2. Require the use of construction materials and utility equipment that
are resistant to floodwater damage;
3. Require the use of construction methods and practices that will
minimize flood damage;
4. Be designed or anchored to prevent the flotation, collapse or lateral
movement of the structure or portions of the structure due to
flooding;
5. Assure that in regard to mobile homes, specific anchoring
requirements include:
a. Over-the-top ties be provided at each of the four corners of the
mobile home with two additional ties per side at the
intermediate locations. Mobile homes less than fifty feet long
require only one additional tie per side,
b. Frame ties be provided at each corner of the home with five
additional ties per side at intermediate points. Mobile homes
less than fifty feet long require only four additional ties per
side,
c. Each required tie of the anchoring system shall be capable of
carrying a force of four thousand eight hundred pounds,
d. Any additions to mobile homes shall be similarly anchored.
6. All mobile homes to be placed within zones A1-30, but not into a
mobile home park or mobile home subdivision have: (1) stands or lots
elevated on compacted fill or on pilings so that the lowest floor of
the mobile home will be one foot or above the base flood level, (2)
adequate surface drainage and access are provided for a hauler, and
(3) in the instance of elevation on pilings, lots are large enough to
permit steps, piling foundations are placed in stable soil no more
than ten feet apart, and reinforcement is provided for piers more
than six feet above ground level.
7. Mobile homes, except in an existing mobile home park or mobile home
subdivision, are not to be placed within a regulatory floodway.
18.54.070 Floodplain development -- City engineer action.
The city engineer shall review all subdivision and land development permit
applications and shall make findings of fact and assure that:
A. All such proposed developments are consistent with the need to minimize
flood damage.
B. Proposals for subdivisions and other new development incorporating more
than five acres or fifty lots, whichever is lesser, show on tentative
parcel maps, tentative subdivision maps or site plans, regulatory flood
elevation data for any included area designated zone A, zone A1-30 or zone
AO.
C. Adequate drainage is provided so as to reduce exposure to flood hazards.
D. All public utilities and facilities are located so as to minimize or
eliminate flood damage.
E. The natural landscape of all designated floodways and major watercourses
is substantially preserved.
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F. An evacuation plan indicating alternate vehicular access and escape routes
is filed with appropriate Disaster Preparedness Authorities for mobile
home parks and mobile home subdivisions located within zone A, zones A1-30
and zone AO.
G. Within zones A1-30, new mobile home parks and mobile home subdivisions,
expansions to existing mobile home parks and mobile home subdivisions, and
existing mobile home parks and mobile home subdivisions where the repair,
reconstruction or improvement of the streets, utilities and pads equals or
exceeds 50% of the value of the streets, utilities and pads before the
repair, reconstruction or improvement has commenced have: (1) stands or
lots elevated on compacted fill or on pilings so that the lowest floor of
the mobile home will be at least one foot above the base flood level, (2)
adequate surface drainage and access for a hauler, and (3) in the instance
of elevation on pilings, lots are large enough to permit steps, piling
foundations are placed in stable soil no more than ten feet apart, and
reinforcement is provided for pilings more than six feet above the ground
level.
H. Any encroachments, including fill, new construction, substantial
improvements, and other developments within the designated regulatory
floodways that would result in any increase in flood levels during the
occurrence of a lO0-year flood discharge are prohibited
Presented by Approved as to form by
WPC 0492E
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FIRST READ AT A REGULAR MEETING OF THE CITY COUNCIL OF THE
TY OF CHULA VISTA· CALIFORNIA· HELD June 28 , 19 8__3· AND
FINALLY PASSED AND ADOPTED AT A REGULAR MEETING THEREOF HELD Jul.y 5 ·
19 83 , BY THE FOLLOWING VOTE· TO-WIT:
AYES: Councilmen: Scott, Malcolm, Cox, Moore, McCandliss
NAYES: Councilmen: None
ABSTAIN: Councilmen: None
ABSENT: Councilmen: None
May~~City of Chula Vista
ATE OF CALIFORNIA )
COUNTY OF SAN DIEGO ) ss.
CITY OF CHULA VISTA )
I, UENNIE M. FULASZ, CMC, CITY CLERK of the City of Chulo Vista, California,
DO HEREBY CERTIFY that the above and foregoing is o full, true and correct copy of
ORDINANCE NO, 2039 ,and that the some has not been amended or repealed.
DATED
(seal) City Clerk
CC-660
ORDINANCE NO. 2039
AMENDING SECTIONS 18.54.020, 18.54.030, 18.54.050, 18.54.060
AND 18.54.070 OF CHAPTER 18.54 OF THE CHULA VISTA MUNICIPAL CODE
ENTITLED FLOOD PLAIN REGULATIONS RELATING TO REQUIREMENTS
CONTROLLING DEVELOPMENT OF PROPERTY WITHIN IDENTIFIED FLOOD
PLAINS IN ACCORDANCE WITH FEDERAL RULES AND REGULATIONS
By a unanimous vote on July 5, 1983, the City Council placed
the ordinance on its second reading and adoption.
The purpose of this amendment to the Flood Plain Ordinance
and amendment to the Flood Plain Regulations is to make them current
with more definitive flood plain data received from the Federal
Insurance Administrator.
When Chula Vista adopted its Flood Plain Ordinance in 1978,
the Administrator provided the City with the Flood Hazard
Base Map which defined the 100-year flood areas but did not
designate base flood elevations, flood hazard factors nor
floodway boundaries. The Administrator has now provided the
City with that information making it possible to bring the
City's Flood Plain Ordinance and Regulations into the final
stage of compliance with the Federal Regulations.
Copies of the ordinance are available at the office of the
City Clerk, City Hall, 276 Fourth Avenue, Chula Vista.
Dated: 7/7/83
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